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DIFFER Publication

Evidence of suppression of ITG-instability in the radiatively improved mode in TEXTOR-94

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Abstract

Characteristics of the toroidal ITG-instability are analysed for conditions of the L-mode and the radiatively improved (RI) mode triggered in TEXTOR-94 by puffing of neon. Analysis is performed for experimentally measured profiles of the plasma parameters and densities of impurity species. It is shown that in the Pi-mode the anomalous transport induced by this kind of instability is reduced significantly in a large part of the plasma volume. This is an important channel of the energy confinement improvement. The role of the radial electric field is envisaged.

Year of Publication
1999
Journal
Plasma Physics and Controlled Fusion
Volume
41
Number
3
Number of Pages
L9-L15
Date Published
Mar
ISBN Number
0741-3335
DOI
PId
ac767b5ef95307e83f7e8e29938e30e0
Journal Article
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